Improvement in fruit-jabs



ititeil tate @sind @Mita Letters Patent No. 98,586, dated January 4, 1870.

'INIPROVEMEN T IN FRUIT-JARS.

The Schedule referred to in these Letters Patent and making part vof the lame I, WILLIAM L. HALLER, of the city of Philadel-` phia, in the State of. Pennsylvania, have invented certain Improvements in Stoppers for ASealing Fruit- My invention is an improvement upon the stopper patentedto G. M. Alexander', as assignee of James D. Willoughby, the inventor, dated J anu-ary 4, 1,859; and relates to the combination, with a horizontal ledge or seat and vertical sides in the inner side of' the mouth of' a glass or glazed-ware jar or bottle, of a glass or glazed-ware stopper', a sheet-metal screw-cap around 'the outer side ot' the same, and an elastic air and water-prooi' packing-ring between, in such a manner, that as the cap is screwed down around the glass stopper', so as to compress the elastic packing'ring, while the vitreous stopper is resting down uponithe ledge or seat in the mouth of the jar or bottle, the packing-ring will be increased in its external diameter, and thus pressed outward against `the inner surface of the mouth ot' the jar or bottle to whiclrit is intended to be applied, so as to not only render 4the mouth of the vessel air-tight, asl by said Willonghhys invention, but, at the same time, to present a glass or glazed-ware surface only to the contents of' thevessel; the object. of" my invention being to obviate the injurious effects which arise from oxidation or decomposition of the metallic bottom ofthe said Willoughhys stopper.

Description of the Accompanying Drawing. The figure represents a central vertical sectionof an appropriate glass jar, having a stopper applied whichembodies my invention.

General Description. 5

A is a glass' fluit-jar, having its mouth enlarged suficiently at its upper part, c', to produce a tlat horizontal ledge orl seat, a, and Vertical sides, a, around the inner side of the same.

,B is the glass stopper, adapted in size tot the jar. It is made hollow, and open on' its under side, and with its lower edge an'ged, so as to produce `a horizontal' projection, b', of rectangular cross-section, and with its lower side in the same plane with the" whole bottom edge of the stopper, and its outside diameter a lit-tie less than the inside diameter of -the enlargement a', of' the mouth of the jar, above the seat c". i

From the upper side of the flange b', upward tothe dotted line x, which indicates the` top of the stopper B, the outer side is screw-cut, for the reception of' the sheet-metal screw-cap C, and across the middle of its top there is a raised part, b", which serves asa handle, by which to conveniently adjust the stopper down upon the seat c". i

The screw-cap() has a large opening through its top, and its screw .threads extend downward far enough to come nearlyinto contact with a Yfiat external flange, c', the external vdiameter of which corresponds with the external diameter of thefflange b', ot' the glass stopper B. I i

Dv isthe elastic air and water-'proof packing-ring. Itis rectangular in its cross-section, tits around the outer side ofthe stopper B, and rests flatly down upon the flange b', its external diameter being equal with the inner diameter of the enlargement a', of the mouth of the jar A.

A dat friction-ring, of thin sheet-metal or paper, e, is laid upon the elastic ring D, to receivethe flanged edge of the screw-cap, for the purpose of' .allowing they said iiange to slip thereon while being screwed down upon it.

The mode of operation consists in placing the stopper B so that it will rest down upon the `seat c" of the jar A, adjusting the packing-ring D'down upon the flange b of the stopper B, the friction-ring e upon the packing-ring D, and, finally, screwing the cap C down sufficiently tight upon the latter to cause the packingring D to lie-compressed enough to cause its vexternal edge to fit air-tight against theinuer sides of the eulargement a' of the month of the jar, and thus seal it, leaving a 'glass covering only next tothe contents ofthe jar, as represented` in the drawing;

` Claim.

1 I claim, as my invention- In combination with the horizontal ledge or seat a, and vertical sides a", in the inner side of the mouth of' the jar A, the anged screw-threaded glass or glazedware stopper B the flanged screw-threaded sheet-metal cap C, an the elastic packing-ring D, substantially asv and for the purpose hereinbefore set forth.

, `WM. L. HALLER.

Witnesses: i

BENJ. MoRrsoN WM. H. Morrison. 

